posted on 2016-01-18, 15:41authored byFlorian Brettner, Silke Janitza, Kathrin Prüll, Ernst Weninger, Ulrich Mansmann, Helmut Küchenhoff, Alexander Jovanovic, Bernhard Pollwein, Daniel Chappell, Bernhard Zwissler, Vera von Dossow
Enrollment of surgical procedures into the analysis.